Firing head for furnaces



y 20, 1953 L. VIGNERE, SR 2,835,322

FIRING HEAD FOR FURNACES Original Filed Sept. 4, 1952 FIG. I

A c [2| IO f 32" 34 ll 27 35 4 INVENT OR Leonard Vignere, Sr.

ATTORNEY} FIREJG HEAD FOR FURNACES Leonard Vignere, Sn, New Castle, Pa.

Griginal application September 4, 1952, Serial No. 307,860, new PatentNo. 2,732,890, dated January 31, 1956. Divided and this applicationNovember 7, 1955, Serial No. 545,272

2 Ciairns. (Cl. 158-28) This invention relates to firing heads offurnaces and this application is a division of my application Serial No.307,860 dated September 4, 1952, which matured into Patent No.2,732,890, dated January 31, 1956, and was in turn, acontinuation-in-part of my application Serial No. 188,380, filed October4, 1950 which has matured into Patent No. 2,670,032 dated February 23,1954.

An important object of the present invention is to improve the firinghead disclosed in the application, Serial No. 188,380, referred toabove, in order to render it more eflicient when in use. This hasincluded the rearrangement of baffles to cooperate with oil gasgenerating burners, particularly of the structure disclosed in myapplication Serial No. 307,860, referred to above, to provide forelfective gasifying of oil mist, utilization of all of the oil gas, andelimination of most of the undesirable solid products of combustion; theformation of the firing head in two readily separable parts foretficient assembly and disassembly; the provision of means to adjustablysupport an upper firing head section upon a lower firing head section,so that the spacing apart of the two may be varied-as required and theupper section levelled; and the reduction in the body weight of thefiring head by forming the body portion of the upper section thereof asa shell rather than a solid member.

Other objects and advantages of the invention will be apparent duringthe course of the following detailed description of the invention, takenin connection with the accompanying drawing, forming a portion of thisdis closure and in which drawing:

Fig. l is a vertical section through the firing head and associatedstructure of a furnace of which it forms a part.

Fig. 2 is a bottom plan of the lower section of the firing head.

Fig. 3 is a top plan of the lower section of the firing head.

Fig. 4 is a bottom plan of the upper section of the firing head.

In the drawing, wherein for the purpose of illustration is shown apreferred embodiment of the invention and wherein similar referencecharacters designate corresponding parts throughout the several views,the letter A designates a furnace; B, an oil gas generating combustionhead; and C, the firing head of the present application. 1

The furnace A includes an outer wall 10 defining a chamber 11 while thecombustion head B, which is fully described in my application Serial No.307,860, referred to above, includes support means which contains upwardly extending suports 12, which may be spaced apart cylindricalmembers with flat, horizontal upper end faces. The combination head B isalso shown to include 2. casing 13 having an upper truncated cone-shapedwall 14 with a central opening 15. There is also shown an electrode 16(being one of a pair) which may be employed in rates Patent 2,835,322Patented Mary Z0, 1958 the production of electric discharges forigniting the oil gas and which extends with its free end over the mouth15.

Referring now to the firing head C, the same comprises a lower section20 and upper section 21, with the lower section having a somewhatdish-shaped body portion 22, open at its bottom to provide asubstantially circular opening 23 surrounded by a tubular flange 24carried by the body portion 22 and which may be provided with a cut-out25 extending from the lower edge of the flange to accommodate portionsof the pair of electrodes mentioned. It will be noted that the flange 24extends both downwardly and upwardly from the lower end of the bodyportion 22 but the greater portion of the flange extends downwardly withthe edge of its lower end portion being slightly above the horizontalplane of the upper edge 27 of the truncated cone-shaped wall 14, and theinner diameter of the flange 24 is considerably greater than thediameter of the central opening 15. For example, the inside diameter ofthe flange 24 may be about twice the diameter of the central opening 15.Carried by the body portion 22 is means to detachably mount the lowersection 20upon the support 12. The means may be a plurality (three beingshown, by way of example) of socketed members or projections 26 with thedownwardly-opening socket thereof adapted to rather snugly receive theupper end portions of supports 12. This arrangement will support thelower section 20 and also prevent rotation thereof.

The upper section 21 includes a downwardly extending invertedcone-shaped central body portion 30 and an outwardly-extending archedperipheral flange portion 31 extending therefrom. Preferably, the bodyportion 30 is hollow, as may be seen in Fig. l and the outer edge partsof the flange portion 31 are above the tip 32 of the cone. Carried bythe flange portion 31 are a plurality of spaced apart flanges 33 and 34depending from the lower face of the flange and with the inner endportions of the baflles 34 extending to the central body portion 30. Itwill be noted in Fig. 4 that the longitudinal axes of the baflles 33 aretangential to the periphery of the central body portion 30, while thelongitudinal axes of the main body but the longitudinal axes of theirminor body portions 36 are radially disposed with respect to thevertical axis of the central body portion 30. All baflies have loweredges 42 in the same horizontal plane and extend with their outer edgessubstantially in the same vertical plane as that of the outer edge ofthe flange portion 31. The central body and outer flange portions 30 and31 respectively and the baflies 33 and 34 provide means, when heated, tocomplete gasification of fuel from the combustion head B and burning ofthe fuel below the upper section 21. For example, I have discoveredthat, employing an average grade of fuel oil under normal pressure andwith the furnace in operation, the temperature just below the centralopening 15 will be in the neighborhood of 900 F., while the temperaturewithin the lower section 20 will be around 1000 F., but the temperaturewithin the confines of the upper section 21 will have climbed tosubstantially 1840 F., and the heated gas emerging from the uppersection 20, as shown by the arrows, will be at substantially 1840 F. andit is this heated gas which is provided for heating by the furnace.

Fig. 1 illustrates the preferred elevational .view of the bafiies 34 andthe baffles 33 have substantially the same shape except that they do nothave the minor portions 36. The shape has been discovered veryconductive to good circulation of heated gas and its contact with theheated walls of the central portion 30 and flange portion 31.

Means to detachably support the upper section 21 asaasza a from andspaced above the lower section 20 preferably comprises a plurality ofspaced-apart lugs 37' extending inwardly from the lower section 20 andprovided with upwardly-opening recesses. 38, which recesses alsopreferably open toWa-rd the vertical axis of the section 20. Theserecesses 38 are adapted to receive the lower ends of screw threaded,levelling shanks 39 carried by downwardly-extending interiorly' screwthreaded sleeves 40, with the screw threads of the shanks and sleevesmating, and the sleeves being exteriorly screw threaded at their upperend portions for mating with the screw threads of spaced apart"soclceted members 41 carried by the section 21 and extending downwardlytherefrom. This permits ready removal of the section 21 from the section20 without unscrewing or unbolting the sections, and the section 21 maybe levelled as is obvious or lowered or raised as may be founddesirable.

The tubular flange 24, where it extends above the opening 23- provides,in conjunction with the wall of the body portion 22, a circular recessor pocket for any solid products of combustion which might form abovethe body portion 22 and below the flange portion 31 and are not blownoutwardly from the bafiies. The flange 24 also tends to prevent fuelfrom passing outwardly in a generally horizontal flow as it emerges fromthe upper end of the opening 15.

The arrangement of the specific baflles provided, in conjunction Withthe inverted conical central body portion 30 and arched peripheralflange, is conductive to consumption of substantially all the oil gaswhich is combustible.

\ Various changes may be made to the form of the invention herein shownand described without departing from the spirit of the invention orscope of the claims.

What is claimed is:

l. A furnace firing head including a lower section provided with adish-shaped body portion having an upper edge of greatest diameter, acentrally-disposed lower opening and a tubular flange extendingdownwardly from said body portion at said opening, an upper metallicsection having means to promote gasification and ignition of fuel fromsaid lower section when said upper metallic section is heated, and toguide the gasified and ignited fuel outwardly of said upper metallicsection, including an inverted cone-shaped central body portion, anarched flange portion extending outwardly from said central body portionwith the vertical plane of said upper edge extending beyond the outeredge of said central body portion and a plurality of spaced-apartbafiies extending downwardly from said arched flange portion, eachbaffle having a major body portion with its longitudinal axis tangentialto the vertical axis of said central body portion, and adjustablelevelling means supporting said upper metallic section with the loweredges of all of said battles substantially paralleling the horizontalplane of said upper edge and spaced from said lower section.

2. A furnace firing head according to claim 1- characterized in thatsome of said baflies have minor bafiie body portions extending radiallytoward said vertical axis of said central body portion.

References. Cited in the file of this patent UNITED STATES PATENTS547,473 Ball Oct. 8, 1895 971,561 Rhea Oct. 4, 1910 1,132,722 Kloeb Mar.23, 1915 1,522,064 Johnson Jan. 6, 1925 1,822,844 Klees Sept. 8, 19311,987,487 Moore Jan. 8, 1935 2,231,042 White Feb. 11, 1941 2,475,240Hass'mer July 5, 1949 2,660,230 Denker etal Nov. 24, 1953 FOREIGNPATENTS 556,136 Great Britain Sept. 21, 1943

